mate.core — taipei.404/mate 0.0.7

comp-> clj/s macro

(comp-> & args)

Same as comp but with the arguments in reverse order.

group-by clj/s

(group-by kf coll)

(group-by kf vf coll)

(group-by kf vf rf coll)

(group-by kf vf rf init coll)

Same as clojure.core/group-by, but with some handy new arities which apply custom map & reduce operations to the elements grouped together under the same key.

if-> clj/s macro

(if-> x test then-form else-form)

If branching threading macro.

implies clj/s macro

(implies x y)

(implies x y) expands to (or (not x) y) while being more descriptive of the logical intent.

index-by clj/s

(index-by kf coll)

(index-by kf vf coll)

Returns a hashmap made of [key value] pairs from items in the collection coll where the keys are (kf item) and the values are (vf item). vf defaults to the identify function.

let-> clj/s macro

(let-> x bindings body)

Let threading macro.

seq-indexed clj/s

(seq-indexed coll)

Returns an indexed sequence from the collection coll.

ungroup-keys clj/s

(ungroup-keys m)

From a hashmap where the keys are grouped using sequential collections (lists, vectors ...) or using sets, this function returns a hashmap where those keys are ungrouped.